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authorRalf Baechle <ralf@linux-mips.org>2013-05-21 17:30:36 +0200
committerRalf Baechle <ralf@linux-mips.org>2013-05-22 01:34:28 +0200
commitf94d9a8ef9aebab5317d11fb1633ba14ad240983 (patch)
tree5966f1fb50720e3422fe0331f7a2d9a8c7aab488 /arch
parentbdc92d74e0ec95a8101447467c25f015105f2e5a (diff)
MIPS: Idle: Do address fiddlery in helper functions.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/include/asm/idle.h11
-rw-r--r--arch/mips/kernel/smtc.c3
-rw-r--r--arch/mips/kernel/traps.c7
3 files changed, 15 insertions, 6 deletions
diff --git a/arch/mips/include/asm/idle.h b/arch/mips/include/asm/idle.h
index 8b26ac5c854..be6f807c1e3 100644
--- a/arch/mips/include/asm/idle.h
+++ b/arch/mips/include/asm/idle.h
@@ -8,4 +8,15 @@ extern asmlinkage void r4k_wait(void);
extern void r4k_wait_irqoff(void);
extern void __pastwait(void);
+static inline int using_rollback_handler(void)
+{
+ return cpu_wait == r4k_wait;
+}
+
+static inline int address_is_in_r4k_wait_irqoff(unsigned long addr)
+{
+ return addr >= (unsigned long)r4k_wait_irqoff &&
+ addr < (unsigned long)__pastwait;
+}
+
#endif /* __ASM_IDLE_H */
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index 46303bc6136..75a4fd70984 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -914,8 +914,7 @@ void smtc_send_ipi(int cpu, int type, unsigned int action)
*/
if (cpu_wait == r4k_wait_irqoff) {
tcrestart = read_tc_c0_tcrestart();
- if (tcrestart >= (unsigned long)r4k_wait_irqoff
- && tcrestart < (unsigned long)__pastwait) {
+ if (address_is_in_r4k_wait_irqoff(tcrestart)) {
write_tc_c0_tcrestart(__pastwait);
tcstatus &= ~TCSTATUS_IXMT;
write_tc_c0_tcstatus(tcstatus);
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index c6da4a905b9..e3be67012d7 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -1542,7 +1542,7 @@ static void *set_vi_srs_handler(int n, vi_handler_t addr, int srs)
extern char except_vec_vi, except_vec_vi_lui;
extern char except_vec_vi_ori, except_vec_vi_end;
extern char rollback_except_vec_vi;
- char *vec_start = (cpu_wait == r4k_wait) ?
+ char *vec_start = using_rollback_handler() ?
&rollback_except_vec_vi : &except_vec_vi;
#ifdef CONFIG_MIPS_MT_SMTC
/*
@@ -1812,10 +1812,8 @@ void __init trap_init(void)
extern char except_vec4;
extern char except_vec3_r4000;
unsigned long i;
- int rollback;
check_wait();
- rollback = (cpu_wait == r4k_wait);
#if defined(CONFIG_KGDB)
if (kgdb_early_setup)
@@ -1892,7 +1890,8 @@ void __init trap_init(void)
if (board_be_init)
board_be_init();
- set_except_vector(0, rollback ? rollback_handle_int : handle_int);
+ set_except_vector(0, using_rollback_handler() ? rollback_handle_int
+ : handle_int);
set_except_vector(1, handle_tlbm);
set_except_vector(2, handle_tlbl);
set_except_vector(3, handle_tlbs);